Sigma and Pi Bonding.

Slides:

Advertisements

Similar presentations

1)Use your white board to draw the Lewis structure for ozone, O 3. 2)What does the word hybridization mean? Use your own words. While you are doing warm.

Advertisements

How to Draw Orbital Overlap Diagrams

8.3 A Sigma Bond Molecular Orbitals

Hybridisation of s and p orbitals in alkanes, alkenes and alkynes Unit 3.

Valence Bond Theory and Molecular Orbital Theory

Hybridization Section Introduction A hybrid results from combining 2 of the same type of object and it has characteristics of both Atomic orbitals.

Valence Bond (VB) and Molecular Orbital (MO) Theories

Sigma and Pi Bonding SWBAT: Draw Quantum Mechanical models of molecules using sigma and pi bonding.

IONIC & COVALENT BONDING ZUMDAHL CH 2 HS-PS1-_____.

COVALENT BONDING: ORBITALS HYBRIDIZATION (9.1). HYBRIDIZATION Consider methane,CH 4 C has 4 valence electrons 1s 2 2s 2 2p 2 This suggests that there.

Hybridization A Blending of Orbitals Methane CH 4 CH 4 Sometimes called “natural gas, ” methane is used to heat homes. Sometimes called “natural gas,

Orbital Hybridizations & Molecular Shapes

Hybrid Orbitals. Why Covalent Bonds Exist Atoms share electrons when their orbitals overlap When orbitals overlap, electrons are simultaneously attracted.

Copyright Sautter SPACITAL ORIENTATION OF ORBITALS IS DESIGNATED BY SUBSCRIPTS FOR THE p, d ORBITALS AND f ORBITALS. S ORBITALS REQUIRE NO DESIGNATION.

ORBITAL HYBRIDIZATION: The question of shape! We need next to examine the relationship between: isolated atoms (with valence e’s in s,p, and d orbitals.

Molecular Orbital Theory Molecular Orbitals Just as atomic orbitals belong to a particular atom, a molecular orbital belongs to molecules as a whole.

Hybridization Section Introduction A hybrid results from combining 2 of the same type of object and it has characteristics of both Atomic orbitals.

Two Bonding Theories Valence Bond Theory (localized electron model) –Electrons in a molecule still occupy orbitals of individual atoms. Molecular Orbital.

CHAPTER 9 Covalent Bonding. What You Will Learn… The nature of the covalent bond How to name covalently bonded groups of atoms Shapes of molecules Characteristics.

Valence Bond Theory Orbital shapes, Individual (“isolated”) Atoms.

Single, Double, and Triple Bonds Covalent Bonds.

Hybridization: Localized Electron Model

Hybrid Orbitals. Sigma Bond (σ) Covalent bond which the electron density is concentrated symmetrically along the internuclear axis Line joining the two.

Hybridization and Other Good Stuff. Introduction A hybrid results from combining two of the same type of objects, and it has characteristics of both Atomic.

Chapter 8 Lecture 8.5 Hybridization Section 8.3 Bonding Theories.

Valence Bond Theory. Linus Pauling Author: “Nature of the chemical bond” Received Nobel prize in 1954 for his work Introduced concept of orbital hybridization.

4.6 Quantum Mechanics and Bonding Hybridization We need next to examine the relationship between: isolated atoms (with valence e’s in s,p, and d orbitals.

4.6 Quantum Mechanics and Bonding: Hybridization.

Hybridization Carbon configuration Carbon in excited state can form 4 bonds.

Lecture 2 Chemical Bonds: Atomic Orbital Theory and Molecular Orbital Theory Dr. A.K.M. Shafiqul Islam

Molecular Orbital Theory

Part 1: Molecular Orbitals

Hybrid Orbitals with Multiple Bonds

CHAPTER 8: ADVANCED THEORIES OF COVALENT BONDING

SUPA Chemistry Sigma and Pi Bonds.

Covalent Bonding: Orbitals.

Valence Bond Theory Linus Carl Pauling (February 28, 1901 – August 19, 1994)

Chapter 2: Structure and Properties of Organic Molecules

Honors Chemistry Mrs. Coyle

Chapter 9 Chemical Bonding Theories

Chemical Bonding Chapters 9 & 10.

Valence Bond Theory.

Chemical Bonding: Valence Bond Theory “in a nutshell” Chapter 10 Section 4 through 6 of Jespersen 6th Ed) Dr. C. Yau Spring

Chapter Eight Molecular Structure

The Nature of the Chemical Covalent Bond

Bonding Theories 8.3 This car is being painted by a process called electrostatic spray painting. The negatively charged droplets are attracted to the auto.

Part 1: Molecular Orbitals

Hybridization of Orbitals

Drawing Lewis Structures

HYBRIDIZATION SIGMA AND PI BONDS

Honors Chemistry Mrs. Coyle

Chemistry 141 Monday, November 20, 2017 Lecture 32 Hybridization

Primarily developed by Linus Pauling, two-time winner of a Nobel Prize

Introduction to Molecular Orbital Theory

Bonding Theories.

Chapter 9 Chemical Bonding Theories

Notice the numbers on the diagram.

Qantum Mechanics and Bonding Hybridization

Chemical Bond Theories

8.3 Molecular Orbitals When two atoms combine, the molecular orbital model assumes that their atomic orbitals overlap to produce molecular orbitals,

Covalent bonds are formed by:

Covalent Bonds.

Qantum Mechanics and Bonding Hybridization

QUIZ: Hybridization & VSEPR Theory

Hybridization -often, molecular geometry is based on hybrid orbitals

Valence Bond Theory (VBT) Molecular Orbital Theory (MOT)

Chapter 9 Chemical Bonding Theories

5.3.1 Benzene C6H6.

Presentation transcript:

Sigma and Pi Bonding

Two S orbitals overlap Sigma Bond ơ

Two px orbitals overlap Sigma Bond

Sigma Bonds are sausage shaped They occur when Two s orbitals overlap Two Px orbitals overlap Head on

As the two px orbitals overlap so do the two py orbitals if they are occupied

 Py or Pz orbital Py or Pz orbital Pi Bond

Pi Bonds As the 2 x orbitals join [forming a sigma bond] The y orbitals overlap [if they are occupied] They also form a modified electron cloud. Shaped vaguely like the symbol π

Pi Bonds are shaped like the symbol  Twp Py orbitals overlap Occur when Twp Py orbitals overlap Two Pz orbitals overlap side on

Bond Construction Single bonds are Sigma bonds Double bonds consist of one Sigma bond and one Pi Bond Triple bonds consist of one Sigma Bond and two Pi Bonds